Improvement in nail-cutting machines



N-vntls. PHOWLIINDGMPHER. WASHINGTON. D. n.

what sans @tutti @twine Letters Patent No. 95,802, dated October 12,1869.

IMPROVEMENT IN NAIL-CUTTING- MACHINES.

l The Schedule referred to in these Letters Patent and making part ofthe same.

To all whom it may concerny n 'accompanying drawings, and to the lettersof reference marked thereon, makinga part of this specification.

. The present invention relates to the automatic nailplate feeder, forwhich Letters Patent were issued to me, on the 17th of November, 1868,and 5th of January, 1869; and consists in certain improvementssimplifying the construction, andsecuring more uniformity and certaintyin operation, and giving a uniform size in the nails, particularly theheads.

In order to enable others skilled in the art to which my inventionappertains, to make and use the saine, I will now proceed to describeits construction and operation, referring to the annexed drawings, inwhich- Figure 1 is a side elevation ofthe machine.

Figure 2 is a front view of the barrel, with the sector that gives `itits motion.

Figure 3 is a vertical section of the friction-disks'.

Figure 4 is a perspective of the vibrating arm.

The nail-machine to which the feeder is attached, is what is generallyknown as the Reed machine, but may be adapted to any nail-machinedesired.

I have deemed it only necessary to show so much,

in the drawings, of the machine as will indicate my present improvement.

On a spindle, A, is a gear-wheel, B, which gives motion to a secondwheel, C, of thesame size, running on a separate shaft.

This second gear C runs another wheel, D, just` ytwice as large, which,by a rod, E, is connected to the arm F of a rocking shaft, G, which runsunder the machine to the feeder, and has on it a mitre-gear, H.

The gear H unites with another and smaller mitregear, I, attached to ashaft, J running at right angles to the barrel, and supported in`bearings connected with the vibrating arm l.

. United to the shaft J, isa toothed sector, L, which inosculateswiththe gear on the barrel M.

By\this arrangement, the barrel is made to rotate one-half a revolution,and then back,thus inverting theplate when placed between thenose-pieces a a.

Extending from the vibrating arm K is a rest, b, to support thefriction-disks N N, which turn on an arbor, c, and are pressed togetherby a spring or springs, d, that may be increased or diminished in powerby nuts e on the arbor.

`Attached to the right-hand disk is a ratchet-wheel,

f, which is turned by a catch, Ii, on the lever g, that turns around thearbor or hub of the disk, thus causing the disks to turn.

Attac-hed to the left-hand side of the vibrating arm K, is a rod, O,that connects with a crank-pin in the small gear-wheel O, and thusmotion is imparted to the vibrating arm.

A bar, l, attached to the horizontal rest of the feeder, is so adjustedas to strike against the lever g, that turns the disks at the forwardmotion of the vibrating arm.

The lever g is brought back in position, at the backward motion4 of thevibrating arm, by means of the spring and connecting-link h, as seen infig. 1.

The vibrating arm K is supported on springs ltfR,

of a yielding nature, to admit of movement of the barrel back andforward, also to allow the vbarrel to lift a little, and also to allowthe nose-pieces a a, to

throw a little to the right as they are drawn forward,

to force the plate between the knives,

It has always been a desideratum, in all automatic feeders, to get thismovement to the right as the plate is being drawn forward, thus carryingthe plate against a guard, and always giving so much for the heads ot'the nails, thus securing a perfect uniformity of heads to the nails,resulting from the yielding nature of the springs, as the movement rodO, on the left hand, draws forward, and the stationary bar l?, on theright hand, is met by the lever g that turns the disks N N.

ln operation, this imitates hand-feeding perfectly.

It is necessary to have' the naihplate perfectly flat on the bed-knifeT, a little before it is drawn between the knives, thus avoiding theliability of striking the moving knife.

By the use of the springs this is effected, for they will yieldsuiiiciently to allow the barrel to rise the little that is required, astheplate is drawn forward between the knives.

The two mitre-gear wheels H and I should be so arranged, relative to theaxis of movement of the vibrating arm, that they will not be thrown outof gear as the arm is thrown back and forward.

To render the knives accessible, the box V, conl taining the bearingsfor the barrel, is so dovetailed, that it will iiton the vibrating arm,also dovetailed, and may be easily removed.

The operation of the friction-disks and other portions of my inventionhas been.fnlly set forth in the two patents above referred to.

Having thus fully described my invention,

What I claim as new, and desire tosecure by Letters Patent, is-

1. Connecting the vibrating arm of a nail-feeding device to the trainesupporting it, by one or more flexible metallic straps, in the mannerand for the purposes substantially as herein set forth.

2. The combination of the reciprocatingrod O, barrel-box V, vibratingarm K, bar I?, link and spring h, and arm g, substantially as set forth.

3. The construction of the barrel-box V, and .its connections to thevibrating arm K, substantially'as specified.

4. The arrangement, substantially as described, of

the shafts C and J, mitre-wheels H I, toothed segment L, andbarrel-wheel M, in relation to the vibrating arm K and barrel-box V.

5. The combination of the friction-disks N N, ratchet-wheel f, pawl i,and arm g, with the.' bar P and the link and spring h, substantially asset forth, and for the purposes specified.

. In testimony that I claim the foregoing, I have hereunto set my hand,this 30th day of August, 1869.

Witnesses: C.' D. HUNT.

J. T. BUTTRICK, OHAs; DREW.

